I hear ya but it didn't answer my question. ?Maybe just me but in 50+ years of vehicles and towing I can't recall a single instance of a blown fuse; certainly no instance of being stranded by one.
I've still got a collection of fuses I bought and carried for 'backup' back in the day when I worried about such, the only time I've used 'em is for the rare mod installation when I needed to 'add-a-fuse'. Yeah, I still carry that box, but in the spares-stash in my RV trailer.
Just sayin' (with knock-on-wood) ....