Speaker stands on spikes or just set-screws? Make a difference?

I recently purchased some nice steel stands. They came with the option of holes in the bottom to attach spikes or not. I opted to get holes + spikes. The spikes which came along with the speakers were not spikes at all, but rather a simple set-screw, like a bolt but without any point at all. I wrote to the stand maker and he said he thought they'd still do a good job of isolating the stand from the floor but also offered a refund for the error. I took the refund. (I'm not disgruntled, mind you; we're talking $40 for 8 nuts and 8 set screws, plus the labor to have drilled holes into the bottoms of the stands. I don't think the price was unreasonable, but they should what they were supposed to be, and the maker agreed.)

In your experience, how important is it for a speaker stand to be on spikes and — given the case described above — do you think that simply perching stands on the included set-screws would do a decent job, even without the spike point?