Another vote for the chesty puller from Simply Rugged.
A bit pricey, since you need to buy the holster and the straps, but they make good quality gear
Not compared to two ( a tanker rig, and an OWB ) holsters!
The chesty puller rig, when detatched from the harness is an EXCELENT OWB holster.
Rob at Simply Rugged is also a great guy to do business with.
I've been very impressed with the quality of his work.