Not SP farming is possible, but definitely not recommended.
I've done an experiment twice.
I played a 3-gap hybrid INT bower with pacheon and lightning main, and cold secondary. I played without silk. Only took the skills I really needed, but at that time, SP tickets were not available. The build leveled quickly, but overall, it really wasn't what I expected.
Now, using a skill ticket...
It's possible to be a decent 2-main 1-sub mastery build. Works especially good with STR, because STR relies alot on a weapon tree, a great deal on fire, slightly on lightning, and close to none on cold. For example, everyone can afford 20 levels of cold for the snow shield. 32 lightning suffices until level 60 +, and then again, flame body extreme, level 5 fire passive and that's that. The rest is heuskal, bicheon or pacheon.
That's how I built my glaiver. Abandoned the character at level 58 with maxed, fully farmed level 58 heuskal (everything except wolf bite spear and book 2 fan storm) , level 52 fire, level 37 lightning, level 20 cold.
The glaiver was strong, but not strong enough. I clearly felt I hadn't farmed at all...
Conclusively: not SP farming is possible but not recommended.
