I have a Nitto CB-02, which is a rotary air tool type, similar to the BDS mentioned above.
Nitto Kohki CB-02 Circuit Beveler
I bought it thinking I could bevel the edges of irregular shapes plasma cut from 16 gage to 3/16" mild steel.
Its not very good for that- its depth of cut must be really small for it to work right, and the carbide cutters dont last long on the HAZ on plasma cut edges.
And, as mentioned, it has a bearing that follows the edge, so it follows every bump.
If you are using sheared flat edge material, it would work better.
But any of the smaller hand powered ones will disappoint in terms of speed and amount of material removed per pass.
I dont have a trumpf beveler, but have a few different similar bosch nibblers and shears, and find the plunge style to be pretty rough in its surface smoothness.
Remember- these bevelers are all built for prepping surfaces to be welded, not to leave a cosmetic edge on a piece that will be exposed. When welding, you dont care if there are little irregularities, bites that are deeper every once in a while.
my guess is, if you are thinking about using these for SS parts for your sculptures, you probably wont get the finish you want, and it wont save any time over just sanding them.
I used to do a fair amount of production sculpture and furniture in sheet, and hoped this tool would do all my edge finishing faster and easier. It did not. I dont do much of that anymore, but I found that pretty much nothing beat a light hand and a flap disc.
We are not far apart- you can come and try out the nitto if you want some time.
My shop is just outside Edison, 20 minutes from Anacortes.