A pretty neat idea overtaken by posi-screws – It'd probably be fairly poor at both jobs though in any case.
The demise of Skarsten scrapers is sad though. Their cabinet scrapers were great and very handy. I kept a few old blades for a while but eventually gave up and went back to card scrapers.
I did not know Skarsten scrapers were no more, possibly this explains why nice ones with spare blades do so well on EBay, we sell quite a few in a year, putting a few togerther at a time to make shipping reasonable.