My current JMCK AIWB rig is for a Sig p320c with an XC-1 light. The options are as follows:
No extra tuck
Minimal wedge
Thick Kydex
Split loop
Full sweat guard, wrapped around rear sight
I add my homemade Junk Carry Pillow.
(On left: JMCK IWB #3. On right: JMCK AIWB as described above)