As the title says, any one using these?

There are several who are using the LiPo packs to build a wall. They are listed under the Powerwall section (4am here, so plz excuse not putting links to them here, headed back to bed)

Sleep well Korisham

If you want then you can use them for whatever you want. They are often high drain cells, by design and because their are usually bigger than 18650s, and can also be used for some high power applications. But obviously that depends on their condition and where you got them from.

*yawn* Ok, now that my brain is a little clearer

I will point out that using the LiPo's in any kind of build, you need to make sure they are under external pressure. Otherwise they can swell. One of the other guys built a rig that keeps them pressed during operation.
Here's one of them: http://secondlifestorage.com/t-Prismatic-cells
And another one: http://secondlifestorage.com/t-Li-Po-Power-Wall

I think those are the only two builds with the prismatic/LiPo cells/pouches. There may be other posts about building "something" with these in the other topic sections.

http://secondlifestorage.com/t-My-Wall-of-Power?page=7 post 66 is another build with lipo's
with some cool 3d prited holders

later floyd