Velveteen comes in different weights, qualities and fibre content.

I have a quilt I definitely want to use velveteen in. Maybe a project this winter?
I'll be looking for a velveteen that will work alongside of quilting cottons.
As a trial run, I will just buy a small piece.
I'll start with a hot wash/dryer to see how the fabric stands that test.
Then onward to making a sample block or two, quilting it up for a simple project.
That should give me a good sense as to how it would work in a larger quilt.

Definitely, do not hesitate in wanting to use velveteen ...
... only hesitate in finding one that is appropriate for a quilt!

Some cotton velveteens are very "user friendly" - and wash and dry beautifully. Others - end up looking very pathetic after getting washed.

...... and exactly why I will be doing the trial run!!!!

Some are nice and soft and quilt-cuddly-able (good word, eh?) ....
.... some become hard and rough and would not be quilt-worthy in my mind!

It really depends on the type of velvet you have, there is cotton velvet, polyester velvet, stretch velvet and maybe a few more. cotton velvet is heavy, polyester is a lighter weight, stretch is slippery. I would go with cotton, make the sashing seam wider than 1/4" because velvet will fray. Washing or send the velvet to the dry cleaners would be best.
Like the others, make a sample first.

I think I'll try using on several blocks. Wash & dry to see how it works. Thanks for suggestions/thoughts!!