Probably not the answer ever player wants to see but that's CF for you, something for everyone not everything for everyone. Invokers are unlike any other class and some of us nerds like the spell grinding process as crazy as that may be. And the payout at the end of spamming up a 7 path invoker is way too great to have them walking around at will.

BUT - if the only thing holding you back from playing invoker is the skill spamming, just skip a couple paths, right?