Not helpful at all IMO.
When the thickness of a barbell is an issue like it was for me, (not being able to completely close fingers around it, a general barbell is thick enough as it is, using gloves will only make it thicker.
I've sprained my wrist last year trying to use straps and now would exclusively use magnesium (the one I have is called Liquid Grip). I've also bought my own women's barbell now I'm in a gym that doesn't have these.
When thickness is not an issue, it is simply a matter of slowly building up your grip strength, which isn't happening with gloves either.