The cold starting problems with the Lithium Phosphate batteries will keep me away from them. To me the weight savings is not worth the trouble of trying and possibly not being able to start the bike after a cold night of camping in the mountains.
Normally I'm all about technology, but this still needs more development before I'd ever buy one. If I lived in Phoenix or Tucson I'd have one in a heartbeat though.
"To strive, to seek, to find, and not to yield."
KTM 525 XC-W // KTM 950 Adventure