New here myself :B the LED versions make me happy, the other ones *shrug*... as you say you are not much of a font designer, and I'm sure they'd look fairly pleasant (and clear) scrawled across the page. Have you tried much writing with them?
I've done a bit of writing with it. It's about like block printing (I haven't come up with a logical way of making a cursive form, at least not yet). The hardest part is converting English words to some sort of phonetic pronunciation in my head. I've gone back to little notes I've scribbled out, and I can read them again, despite my poor handwriting, which is more than I can sometimes do with my normal scrawl.
I also like the dots system, any other neat math conventions?
Not yet. I liked the idea of numbers and words being related -- there's a reason companies with 1-800 numbers like the 7 digits to be related to a word on the touchpad. It really makes it easier to remember. Making a word into a number by putting a dot in front of it was an easy way to accomplish it.
On a somewhat related note, I've also played around with different number bases. Like others with such interests, I initially looked at duodecimal and really like it, but to be honest I actually like senary (base 6) better, since primes in that notation all end in 1 or 5, and multiples of 1/5 and 1/7 have a more elegant representation after the radix point. As a further complication (or in many respects, simplification), I also like balanced notation (in case you are unfamiliar with that, here's a Wikipedia article on balanced ternary that should give an idea: http://en.wikipedia.org/wiki/Balanced_ternary
I know people's eyes are starting to glaze over at this point, but just to complete the process (grin), I came up with an idea for balanced senary notation as well. There are symbols for the integers between -3 and 3 -- (-3), (-2), (-1), (0), (1), (2), (3) -- and a few simple rules, and you get a number system where rounding and truncation are equivalent (and it's the cool kind of rounding known as unbiased rounding or "round half to even").
Getting back to Clearscript, it has 37 symbols, and balanced base-36 (alphadecimal) requires 37 characters. Base 36 can be considered a more compact written form of base 6, which gets back to my favorite number base.
Gnunix, the voiced/voiceless pairing is originally from Shavian. There are a good number of alternative English orthographies descended from Shavian, whose letterforms are borrowed in part from shorthand.
Personally I think such pairings are convenient for a (hobby-)linguist learning a new system, but might confuse people if the system were tried on a wider population. When rotational rules are pointed out to kids trying to learn the Cree syllabary (vowel is indicated by rotation) it can slow down their progress (don't remember where I read this), and really the mind prefers to think of voiced and unvoiced consonants as totally separate, associating this in pairs is a learned skill.
You might be right on the confusion part. I didn't notice it, but that's probably because I was trying to figure out how to fit everything together, and the effort of doing that might have masked the other. I originally wanted to make all voiced consonants have a line above or a line below the unvoiced version (I still might try that at some point), but I like this pretty well. To be honest, part of the reason I chose it is because it opens up the possibility for amusing wordplay -- compared to English, a lot more words and phrases should be readable in normal orientation, and say something completely different when flipped upside down.
Since you mentioned the LED versions, I think I might post how I picked them. It's really simple, but fun to see.