Tool-Less Harddrive Mounts - Any effects on MTBF?

[klau1]

I was wondering if anyone had any thoughts about today's cases with Tool-Less clips that simply clip the hard drive to the case with spring studs.

Since the mounting is looser compared to screw mounts, will this adversely affect the hard drive's MTBF?

In fact, I was looking at this case:
http://www.anandtech.com/show/4460/bitfenix-shinobi-the-budget-ninja/3

 

[Mushkins]

Honestly, I find most of these screwless harddrive mounts hold the things in with a death grip. They're a pain to remove, and they're loaded down with rubber bumpers to manage vibrations. I'm confident there's no real noticeable impact unless it's a really cheapo case with low quality mounting brackets.

If anything, I wish they'd go back to using screws just because they're easier to get out