Kits, especially adding multiple ones.

I've read that the game only allows for 9 (I believe) kits to show per class. I'm okay with that, but there are some that have caught my eye (Specifically Divine Remix, Chanter, and Geomantic Sorcerer)

Anyone have any experience installing multiple kits from different creators? Is it game breaking?

I tried going to TDD's page, but Google/Firefox keeps blocking them so I can't really see any of their kit info. Any suggestions on some fun kits?

Thanks!