True but I've seen a specialized killstreak snack attack which actually displayed the sheen despite it being glitched and not being able to streak.

The glitched pro kits are the most expensive pro kits around right now and I hope to get a nice amount for mine in the near future.

Thats correct. Some people made killstreak taunts, sandviches, noisemakers and so on. I decided on the only unusual I own. I still have a glitched Specialized and Professional Kit in my backpack.

Thats the funny part. It doesnt killstreak on its own, display the sheen nor eye effect. Not unexpected seeing how I used a glitched Professional Killstreak Kit on it, which you cant get as MvM loot anymore.

I still have it, its part of my Item Showcase. My biggest treasure

Wow