I wonder if we lost patricke...

Lipo batteries are certainly worth considering. For the size, weight, and price, you can get Li-Ion batteries (if you include all of the extras besides battery price: alarms, voltage monitors, charger, etc); you really need to do your homework for Lipo. And, for those of us that have the time and passion they work great.

Li-Ion (or LiFePo) is plug and play. I got home late last night, plugged my battery in and went to sleep. Most people wouldn't sleep while a LiPo was charging (unless they really trusted their fire alarm).

Li-Ion is great for the casual user who wants plug and play.
LiPo for the hobbyist who is going to take the time and energy (and precautions) to make it work right.

I was leaning to Lipo for my next pack (small light weight pack for commuting), but I see no downsides to a small Li-Ion pack with quality Samsung cells. That and with the Li-Ion I can charge at work or at home while sleeping. If I'm using it every day, trouble free charging is a priority.