There's the 12 V Milwaukee out there that looks as svelte as my 23 ga Harbor Freight pin nailer (the backup to my PC)
Cordless nailers make a lot of sense for my shop. I don't use nailers all that much and every time I do, I have to hunt around for the air hose, the oil for the nailer and flip on the compressor and wait for it to fill.
The biggest problem I have is - I'm Makita with all my cordless. I don't want to climb on the battery merry-go-round. The 23 ga Makita cordless is sort of hefty & it takes odd lengths of pins.