I lose some to tuning and lose some to recovery and recharge.
Probably closer to 2 1/2 lbs but still use a lot although with a CPEV I can get by with a lot less refrigerant than a captube solution. That said I am going to use captube on my next build because I want to try something new.
Consumed about 2kw all done up.
I had some pictures on my external, but I might have to go visit the lab I sold it to for some better ones. Ended up doing 300W @ -133 with the CPEV playing havoc so switched out for a argon subcooler stage.