I thought the primary warning about Kevlar and Spectra gloves was that they were not puncture resistaint. There is the standard disclaimer that they are cut resistaint, not cut "proof".
I don't have any Spectra gloves, but my understanding is Spectra tends to be a bit more cut resistaint, but also a bit more "slippery" (not sure how much in a glove) and much more prone to melting. So, don't grab any burning items with Spectra gloves on! :-)
Personally, I carry a pair of
Ansell ArmorKnit *and* a pair of
Turtleskin Full Coverage gloves, sized where I can wear the knit gloves as a liner.
The Turtleskin gloves are basically a thin Kevlar glove knit so tightly that it is puncture resistaint in addition to cut resistaint. The downside of this is, like other puncture resistaint gloves, they are a bit stiff. I like the full coverage gloves because it is just the thin layer of Turtleskin which protects the entire hand and nothing else. This way you get maximum possible flexibility while retaining protection.
But because they are thin and have no padding I carry the liner. That way I can wear either one alone, or both together.
(Actually, I have to admit I actual carry two pairs of the full coverage in different sizes. The smaller one to be worn without the liner, and the larger one to be carried with the liner. This provides the best fit for me).
The knit gloves are very cheap. They come with and without "dots". Both gloves are very light to the point there is almost no penalty for carrying them in my bag.
And I like the fact that Kevlar is very heat resistaint.
-john