These ascenders have the same design, with differences only in the color of their anodizing and in their markings:

Image Ascender Cam Finish
>Asol, Version B Asol, Version B Unfinished
>Asol, Version B Asol, Version C Plated
Image Ascender Cam Finish
Fusion Voltron, Version A Fusion Voltron,
Version A
Plated
Fusion Voltron, Version B Fusion Voltron,
Version B
Painted
Image Ascender Cam Finish
Never Stop Never Stop Plated
NS.E.Peak SA–203R S.E.Peak SA–203R Plated

These are well-made ascenders and perform much like the Petzl Ascension. All sharp edges have been removed. The attachment points are simple holes in the shell. They have sharp edges that should be rounded with a file; even so, I would consider their small radius too sharp for directly attaching sling ropes. They are probably acceptable for webbing, but considering the proximity of the attachment points to the main rope, I would recommend using a small maillon for most attachments in order to reduce the risk of sling abrasion.

The upper rope attachment hole is located very close to the main rope. A carabiner through the upper attachment hole will probably drag on the main line. Note that such a carabiner will prevent putting the ascender on or off rope, so one's climbing system must be designed accordingly.

The handgrips are almost large enough to be comfortable for my large hands, provided I don't wear gloves. In any case, I don't climb by gripping ascenders at their handle. I think it is better to simply grasp the ascender from above and lift the ascender in the traditional manner (unless, of course, you are one of those who prefers to climb Frog).

The cam is very well made. The cam stop is placed in a position where it will touch the cam if the ascender is off rope. This keeps the face of the cam away from the inner surface of the rope groove, a nice but unnecessary feature. I don't see much need for cam stops, most active cavers don't weight enough to bend their ascenders to failure by cam pull-through, and there is no need to shock load one's ascenders.

The safety has a ribbed thumb surface. One-handed operation is smooth and comfortable.

These ascenders have the same pit lip disadvantage as the Clog and other stamped frame ascenders, although the reinforcing will help prevent bending.

The lower attachment hole is large enough to accommodate two normal carabiners, but I don't think carabiners are the best way to attach caving slings to ascenders, as there is too much chance of having the ascender slide down and load the carabiner gate.