I was flipping through Petzl's industrial vertical catalog and happened upon a version of their industrial chest harness with integrated chest ascender, the Top Croll.
This appears to be a different version of the ascender than the B16 Croll that we know and love, apparently modified with a wide chest strap attachment hole that fits 2" webbing. I can't find any reference to this different Croll version as an individual part, nor a photo of it without the sewn webbing attachment to the Top chest harness; in fact, even the Top Croll technical note uses illustrations from the B16 Croll's documentation.
My interest is in trying to see if this variation of the Croll would allow the Serpentine chest harness to thread entirely through the larger upper attachment hole, which doesn't seem to work on the Croll intended for sport use.
Does anyone know anything else about this variation of the Croll?