Don't let the sch sets scare you. I'm not one for being totally gimp, but 500 skill isn't necessary to win. With the haste spell (15%) you only need 29% haste from embrava to cap magic haste. That's 435 skill. The extra regen on embrava between 450 and 500 skill is only 7/tick which isn't much when you are already getting 120/tick. The main upshoot to getting 500 skill is the extra tick of regain.
So really the only significant difference between 435 enhancing and 500 enhancing is 1/tick regain. You can decide if that is worth putting together a set that includes high priced items that will crash with the nerf and rare/ex items with a 1% drop rate.
A very ghetto set will get you to 435 (with capped skill only need 31 skill from gear) and with proper stratagem use (and more importantly good dd's) will give you a solid win rate.
af legs 15
alex torque 7
af ammo 4
grip 3
savant head +2 10
merciful cape 5
augmented aby feet 4-5
That's 48-49 right there on stuff that you can get in a day with no gil investement. That will put you over 450 and the only difference between you and someone that spent millions of gil and most likely many hours of voidwatch to make a perfect set will be 7/tick regen and 1/tick regain. That won't cause a loss 99.9% of the time.
Having said that, most people who do spend the time/gil to max sets tend to be the better players. But I think this is one of those fringe situations where I have seen people will a billion gil worth of gear on their other jobs who 'settle' for having a quick and dirty set on sch just to get the job done. You may get backlash from real scholars (I know I have), but you aren't trying to be a real scholar, you are trying to equip jobs you are interested in maxing.
If you have to make a choice between going with 435-450 enhancing gear and starting nyzul right away and farming for two weeks to get a 500 set you will be better served by starting nyzul right away.
And if you have to make a choice between putting together a less than optimal set for sch in nyzul vs putting together a less than optimal set for any other job you would bring, then playing sch is the obvious choice.