Hey, everyone. I've been considering changing my Jungle Nocturne build up a little to give myself a leg up in the jungle early and get myself out and ganking more quickly.
Unfortunately, to do this I will need to swap out my MR/lvl glyphs for something else (eg. AS glyphs).

I've run the numbers on my total magic damage mitigation at lv18 on all four build options (I don't always get Mercury's treads, depending on if they'll benefit me enough) with this equation:

Magic damage taken = 100/(100+MR)

But I'd like some advice before I do. The damage mitigations are as follows:
MR mitigation with...
Banshees + Merc treads + glyphs = 45.085% mage damage taken
Banshees + glyphs = 50.813% mage damage taken
Banshees + Merc treads = 50.632% mage damage taken
Banshees = 57.971% mage damage taken

Anyway, can anybody here advise me on whether I should keep or ditch the MR/lvl glyphs on my build for a bit of AS or something?

No, don't ditch the mr/lvl blues. AS blues are a waste, and there's no reason to ever use them. AP blues would increase your speed more, by putting more damage on Q, but you wouldn't do that, would you?

Q scales off AD, not AP.

I meant E. The chain thing. I'm not a noc player.

The point is, AS blues are a waste of 9 rune spots. If you own them, get a refund.

They only add 9 extra DPS to my E then anyway. The MR/lvl's utility far outweighs that tiny damage boost.

And I didn't specifically say AS glyphs. Those were just the first ones that popped to mind.

Bumping. Come on, can anyone else give me advice?

You got it backwards. You are a jungler so you want armor. Nocturne has a spellshield. So you want to offset that with more armor.

I run jungle noc with attack speed marks, flat armor seals, attack speed glyphs, lifesteal quints + doran blade.

Rush two early gold over time items and rush a trinity before the end of mid game.

I use flat magic resist quints on Noc Jungler. Even a lane Noc needs this damage mitigation. A nice round figure for late game is 130 MR. Here's one way to think about melee fighters: The longer you survive, the more time you have to DPS. More DPS is the ultimate goal, it doesn't matter how you achieve this, so long as it's effective. MR works even though on paper, it doesn't seem as appealing as raw damage.