130drvr,
Any pay/retirement/QOL differences?
No pay difference per drill except likely no flt pay etc. No retirement difference, QOL depends on job like any Trad job. Really, with GWOT, lots of IMA billets and just really a way for DOD to respond to unique/time defined jobs. I'm in an IMA billet (after I left the flying end) and typically work the same as a Trad non flying outfit. The IMA is nice since I rarely see the boss <g> since the duties are far from the home turf. I would not turn down an IMA billet if it appeals to you. More just an organizational classification than anything else.