I have a few work tuff gear (WTG) knives. Their heat treat is good and I'm a fan of their larger blades. I think their big knives are usually a good value.
Personally, I don't think you'll be able to tell a difference between WTG's sk85 and Tops' 1095 while you're using the knives. If you did a side by side test and measured everything, sure, there would be subtle variations, but that could be due to differences in edge geometry,etc. And not the steel itself. If you're just out using the knife, I don't think there's any noticeable difference. Biases towards brands and designs have more impact here than actual results, in my opinion.
I do find that I prefer the WTG knives over tops blades, but that's mainly just because I prefer their designs and I feel you get a little more bang for your buck with WTG (sheaths, swag, scale materials, convex edge, etc.).
I will say this, I prefer WTG's k329 steel (similar to A8) over any 1095 or sk85. It's tough and has a bit more abrasion resistance, which can translate into more edge retention. Also, it doesn't seem like WTG hikes the price up on k329 vs their sk85 knives.
If you pickup a WTG knife, I don't think you'll regret it or find it lacking when compared to a similar Tops knife.
Also, WTG knives are done in small-ish batches so there's usually demand for them. If you buy one and hate it, you can probably sell it or trade it for something else. That makes it a low risk buy in my opinion.
Hope this helps. Apologies for raising an old-ish thread from the grave.