Qualified, not in very regular practice, and no!
Picture the worst case scenario.... your vacuum pump fails, and you're a bit slow to notice it. You eventually figure it out, and recover from the spiral dive on partial panel. You're now terrified, heading in a completely random direction, and - solo, in bumpy IMC - you have to a) not lose control again, b) divert and c) possibly fly an instrument approach at your diversion field.
With 2 vacuum pumps and an autopilot....? Maybe.