From: DengekiStryker | #001 between doubling attack speed with Speed Infusion
Oh, that explains why you thought a combo like that would work I guess. SI is a glorified booster, you can't boost a skill that is automatically max attacking speed, nor will SI work for anyone who already has faster (2) attack speed through booster and/or whatever else their class may offer in terms of speed boosts (ie. it does nothing for BMs, arans, demonslayers, mercs, wildhunters, battlemages, any pally/hero using a pyrope 1h or red katana, or any thief).
Um, the Speed Infusion, Hurricane thing looked more like a, Speed Infusion OR Hurricane thing.
Anyways, just remember, when thinking only for yourself as a Phantom, you can not use more than one skill per tier at a time ever. From my understanding, if you use magic guard, and try to switch to another 1st job skill, Magic Guard vanishes.
When thinking about your party, the same applies to you, but party skills aren't removed from other party members.
Personally, % dmg boost actives would be your best bet for yourself, and if you want charges, lightning (3rd job) + holy (4th job) should stack nicely for you. Not that I'm saying that's the best way to go.
When I heard of the Phantom's ability to steal skills, and then that he could actually use them permanently, the first thought that entered my mind was HOLY SYMBOL, so I was expecting the TC to have it on his list, the fact that he doesn't worries me, is Holy Symbol a skill that you can't use on the Phantom?