You have to dismiss any claim about "hybrid" gear, its usually people finding excuse's for why their inventory always seems to be full no matter how much space SE gives us. At 60 it was "full", at 70 it was "full" and at 80 it was "full" now with mog sack and mog satchet.. its still "full". To properly melee on RDM will require twice as much gear as other jobs for the simple reason that you have two different facets. Thing is you shouldn't ever have both full sets on you at all times, your role is decided when you leave the MH by which sub you choose. If your going "mage" then bring your mage gear and leave most if not all the melee stuff at home. If your going "melee" then bring your TP / WS sets and a then only a few other sets, namely "emergency healing" "basic melee enfeebling" and "melee enhancing" with the possibility of a token nuke set thrown in.
Now for the reason "hybrid" gear is a complete BS argument. In FFXI we switch our gear depending on the action we must do. WAR's don't WS in TP gear, and they don't TP in WS gear. Your going to TP in the best TP gear you can get, WS in the best WS gear you can get, and cast in the best casting gear you can get. You will not TP in a casting piece just because it has a few melee stats on it. If there is a better TP piece available you will be wearing that piece instead of some "hybrid" piece. If there is a better casting piece available then you'll be using that to cast instead of some weaker "hybrid" piece.
Ex,
Theoretical TP Body Piece
Accuracy +10
Attack +10
Haste +2%
Theoretical Casting Body Piece
INT +15
MND +15
MAB+5
M.Acc+5
Obviously those two pieces have dedicated functions. Now let me introduce a "hybrid" body piece.
Theoretical Hybrid Body Piece
Acc +5
Atk +5
Haste +1%
INT +8
MND +8
M.Acc +2
M.Atk +2
There a piece that has parts of both the above specialized pieces but isn't better then either. No one would possible TP in that if they had access to the TP body piece, conversely no one would Nuke in it if they had access to the Nuke body piece. What the "hybrid" people really want is this,
Omega Supreme Body Piece
Attack +15
Accuracy +15
Haste +5%
INT +15
MND +15
M.Atk +10
M.Acc +10
They want gear that is the "best" at both melee and casting. This isn't "hyrbid" gear, its simply new casting gear.