I have a day one KNC Jupiter pre-order and another one due before October 15th. Will they work on P2Pool node based pools OK. I also have three 60(GH/s) BFL SC's I could put on a P2Pool node based pool possibly but thinking of selling them soon.
It's my understanding that the miner software authors have heard _nothing_ from KNC lately, though they were told they'd be given access for testing. So if it'll work in any particular situation is a crapshoot. Historically mining code from hardware vendors has been pretty crappy.
It takes a bit of time to install p2pool and bitcoind, so if you're planning on p2pool mining them I suggest getting it setup and running early. You can happily look at the p2pool graphs even if you're not mining on it. Your BFLs will run great on p2pool, or you could just use p2pool as a backup for them.