I purchased FL50R flash to test it w/ GH3, got it today @ work... quick observations (I might be missing something - hope to be corrected) :
1) FL50R can't work as RC commander flash when mounted on GH3 (nice Panasonic, very nice)
2) FL50R works as RC (not dumb) slave flash in TTL mode commanded by GH3 onboard flash (Metz 58AF2 can't)
Why would you want to use the FL50R as an RC commander if the built in flash will do the same job? Does the FL50R allows more flexibility in some way when used as a controller? I don't know much about intelligent flash but still interested.