AbdulAlhazred
Legend
I'm pretty much in with the general consensus. Multiple HT feats in general can lead to some overpowered characters and tends to make the better hybrid combos superior choices to straight classes, but this is really a special case. If it gets out of hand his patron can always decide he's been unreliable and punish him by taking something back for example.
The only real issue you have to deal with in some groups is the 'me too' syndrome where other players may conclude that should be able to do something similar except of course they WILL try to do it with some level of optimization in mind. You can get some annoyingly pushy players that way sometimes who will try to tell you how entitled they are. Really depends on the group though. If they're really into character development there's usually not much to worry about.
The only real issue you have to deal with in some groups is the 'me too' syndrome where other players may conclude that should be able to do something similar except of course they WILL try to do it with some level of optimization in mind. You can get some annoyingly pushy players that way sometimes who will try to tell you how entitled they are. Really depends on the group though. If they're really into character development there's usually not much to worry about.