I'm sittin' here looking at a wire-gate revolver and an ABC ascender - very similar to a Petzl Ascension. I can find no way to rotate the wire-gate revolver through the two holes at the top of the ascender.
Even if it would rotate through, the ascender is so wide and the Revolver is so narrow, there's no way it will fit. But, it will work well in the large bottom hole of the ascender.
It might work on an ascender that just has a single-sided hole at the top like a large Ultrascender by CMI. Nope, I take that back; I just tried it on a CMI Expedition which has a single hole at the top and there's no way the revolver will work in the top hole of the ascender. Again, it works fine in the bottom hole.