Kipnis swings a Sam Bat JK22 Maple and he swings it well. According to Sam Bat: “Its an extreeeeemely long barrel. The longest we offer. Its got a 15/16th” handle and has a super quick taper to the barrel. The barrel is only 2.48″ to keep a little density and he uses both a 33.5″/32.5 oz and a 33.5″/ 32 oz.
We’ve also seen Kipnis with a combination of the JK22 and TT2 (pictured) which is just a slight modification to the knob (slightly smaller flare).
The JK22 is available just like Kips at the link, as is the TT2.