Here is the summary of my first impression of those that i could test yet:

• Prometheus:
  no, that one needs allot of finetuning. 6-legged camel does not fit. it may look acceptable from a forward/side angle, but not a bit from behind - and thats what i see most of the time...

• Yagel:
  this one has whats missing in prometheus cycle: legs extending forward, but imho its doing to extreme.

• Castel:
  Somehow the "little puppy" walkcycle fits, i like it!

• Cameleon:
  No - this one is like prometheus a fail. 6 legged walkcycles are already tough, 8 leg cycles are even harder - but cheating the gallop-cycle into a 4-legged pattern is the worst way to go (or run).

first impression - more detailed critism when i got time to analyze it more.