"Now some downsides to this is, nobody funded my mission, I paid the full 10K crown fee. But oh was it worth it.~
I only had to spark rev once, because trojan/torto wall trap."

All these years I looked up the wrong definition of live.

Ancient set should save you around 7.5 pips of health against a pure normal attack prior to considering damage fallout etc., so yes, the one armor set that you listed would actually work out to be significant here, primarily because it grants you a health bonus and more than twice as much defense as most other sets do for any one type. Using say, black kat set would save you around 3 pips of health each hit.

The stats that you'd sacrifice from using it over black kat would be enormous though-
ASI lost: med (as if you'd just brought the same setup but w/ black kat)
MSI lost: very high (negative 2 vs positive 2 from black kat)
Damage lost: max

And then you used your trinkets/sprite perk to make up for the damage loss, rather than going full tank-
Damage lost counting trinkets: low
Health lost: 6 (+1 penta - 2 pentas)

In the end it's a questionable proposition at best- you've given up raw health and utility stats like MSI for the ability to tank damage better. The big benefit would be that health pickups on the ground would be much nicer on the whole- rather than lots of flaky health that falls away you'd have slightly sturdier health while regaining the same amount. You also lost out on charge time reduction unless you had UVs, and I'd imagine that that would be a huge boon as you'd be able to shield more in general, and spam winter grave for the freeze easier. The big loss here though is really the MSI, which appeared to be your downfall- "I only had to spark rev once, because trojan/torto wall trap."

If I wanted to bother with resistances I'd personally go with.. exactly what Skepticraven suggested above. You'd resist a lot less damage from the drones, but you'd resist shock.. and your gunner stats would come with ctr med, damage very high vs constructs, asi med. Perfect for setting up a charge loop with winter grave. Further, a couple of unique variants of normal: max would go a long way with that loadout.

Oh, I didn't mean to say that it would bring you close to the normal defense that full ancient would provide, just that it would bring you to the net defensive gain since paintool was trading away the pentas. I'll go fix it, because that did sound like I meant that the variants would somehow give a huge amount of normal.

I agree with Skeptic on the Winter Grave having some great use against them, though I have a level 10 Mega Tundrus to compensate with, for now. Aaah, the feel of saving a teammate's life by freezing a tortodrone that is attempting to charge them. Feels good, man.

The silkwings can't keep up with the incredible DPS the charge attacks can output with either the Iron Slug or the Winter Grave, and for the latter, flash-freezing them right in their tracks is very useful. It made solo'ing them much, much less painful, even on Elite, and I only donned a level 5 Perfect Mask of Seerus (poison medium) and a level 5 Shadowsun Slicker (normal medium/poison medium), nothing too flashy.

I kind of want to get an Iron Slug now, but I got my Grand Tortofist, which is all I desired. Rest in spiraling pieces, tortodrones.