They aren't built anywhere near the strength of IDE devices; you could litterally rip off the cables from the hard drive over and over and never have a problem on litterally thousands of them over the years.
Sata devices require that you be totally, totally, totally careful as they are far far too fragile.
anyhow, I was really asking about whether or not the motherboard on the Z87 supports booting as opposed to whether the drive supports booting. i guess that I was not clear about that. From what I can tell now, it supports booting to the M-Sata port and uses up Sata-port 5 or Sata-port 6 when it is connected.
So i've ordered the Samsung 840 Evo M-Sata 120 gb drive. Their entry into the M-Sata market started in February with their release of their 840-M-Sata version. Tom's did a review of back in Feb or so, on the 120, 240, 500 and 1 Tb M-Sata drives.