Any point to leveling BM if I have BD?

[SirNox]

So because I'm an extreme altaholic I'm trying to limit the amount of characters I will actually play seriously to 4. So far I have blade dancer (main), forcemaster and summoner picked but I can't decide whether I want a blade master or assassin for my 4th. So my question is, is there any point to leveling a blade master if I already have a blade dancer? Is there enough of a difference to where it won't be a waste of my time or are they too similar?  My idea with having both is that I could switch to one if the other got nerfed badly and vice versa, but from what I can see the only difference between them is that BD uses evades and force grip while BM uses blocks and has no force grip. I'll be at max with my main soon so that'll mean before long it'll be time to level an alt and I'd like to have my mind made up by then, so any feedback would be appreciated.

[Fixer]

They have some similarities with things like the stances, but that's about it. They're definitely not too similar.

 

Source: extensive experience with both (level 3-5)

[Pacheon]

Go for the BD instead of the BM. You have much more variety with that little pesky rat... uhm, lyn, pardon me. Or wait for the warlock. :D

[SirNox]

Thanks for the feedback. But, I caved in and decided to just do both ;-;

 

Well, I guess when I get my BD and BM maxxed I'll know. I'm out of my mind heheh...