Tom wrote:

Just be sure to have your T&B on ALL of the time; you will not have
time to turn it on when you need it.

I have a hard time to imagine a situation where I would be suddenly in a
cloud without any forewarning.

I prefer an aviation GPS with an HSI display.

This depends what on you want you want it for. While I believe that it
would allow a safe descent through a thin cloud deck, I don't believe it
would be fast enough for that bumpy climb inside a cumulus congestus.

Stefan