SunRazer
Back From The Dead
Originally posted by DarthAnt66
Both.
For the former, I think in The Jedi Path Obi-Wan or someone else mentions that it's difficult to master the art of combining Force attacks with lightsaber fighting - that may have been TPM or AotC Kenobi though.
There's also Cin Drallig suggesting that you need to spend at least ten years on Niman to master it, and that's if you focus solely on Niman:
"How long can you expect to study Form VI before you master it? If you dedicate yourself only to Form VI, you will study for at least ten years."-- Jedi vs Sith: The Essential Guide to the Force
For the latter:
A Jedi who has mastered Form VI wields amazing lightsaber skill, but does not focus on power or aggression.-- Lightsabers: A Guide to the Weapons of the Force