Going to try and answer my own question...plopped down $30 for this Seidio Innocase Active holster today in hopes that it'll fit the Commuter. I have the Seidio holster for the Surface cases, and it's just a bit too small. Hopefully this one fits the bill.
Got the case and wanted to let you guys know that it fits like a dream
Zero wiggle and snaps perfectly in place...it's like the holster was made for the commuter.
Otterbox Commuter + Seidio Innocase Active Holster will be my winning combo until iPhone 5.