Trend-wise, it will probably fade and recycle (come back 10 years later).
Personally, I think it depends on the overall styling of the bag - I've seen some that look unbelievably cheap, even when they're more expensive, and I've seen some where the studs just add to the overall appeal of the bag.
I have an eggplant Bulga one with studs I still love. I agree, it depends on the shape of the bag and amount of studding. If it's used as an accent it ***may*** remain timeless but if it's overdone it'll scream trendy.