I love stubs for signatures. My favorite "signature pen" is a gold-plated Sheaffer Targa that came with an oblique stub. However... The point is too wide for comfort with my ordinary everyday scribbling, which means I wouldn't use it for much else besides signatures. I did get a leather carry case with two pouches, so I could carry the gold Targa with the stub nib in one slot and a silver Targa with a F nib in the other. That makes a pretty neat combination.
I also have a Bexley Corona with a B nib that was custom-ground to a 0.9mm stub. That's a good compromise, as it's wide enough to make a fairly bold signature, but fine enough to feel comfortable with my everyday handwriting too. That's worked well as a one-pen solution.
Thanks, is oblique nib suitable for oval or sharp signatures?