Actually, by sheer chance I discovered that s.e.u.c.k. is at least partway system friendly.
On my amithlon box I have a sort of "emulation layer" that uses uae to transparently run custom chipset hitting software. While attempting to run it one time I realised I was using the amithlon side (ergo rtg only) and was surprised to see seuck still loaded. I got the normal menus displayed and could go into all the sections of the editor. The stumbling block however seemed to be that I had no chipram (rtg only) so couldnt do anything graphics or sound oriented, which makes something like s.e.u.c.k. a bit pointless
Id be curious to know if it could be mode promoted on a real amiga with chipram though if anyone ever feels like indulging me and checking it out.