Which pistol? XD or GLOCK .40
I have a 9mm STORM F which has been a very good handgun. I recently got my hands on a 9mm STORM F sub-compact. This gun is the height of a 20 round mag and has a 3.5" barrel. Works the same as my larger handgun.
If you like your .40 STORM I believe the sub-compact STORM is also available in .40 cal. You might want to check that out. I also recommend the crossbreed mini-IWB holster with combat cut.
The advantage of having both my standard and sub-compact in the same caliber and both being STORM PX4 fire arms is the sub-compact carries (in 9mm) a 13 round magazine whereas my full size PX4 carries 17 and 20 round magazines. I can't use the 13 round mag in the full size PX4 but the 17 and 20 round magazines for that gun DO fit and work well with the sub-compact. Means I can carry 14 in the gun and ONE 20-round reload.
TG