Is it safe to buy SanDisk Ultra Fit USB 3.0 flash drive in any and all sizes for booting from them?

To reflect to my OP:

To be more precise, is it safe to buy the above drives (North American model numbers):

SDCZ43-016G-A46 - 16GB

SDCZ43-032G-A46 - 32GB

SDCZ43-064G-A46 - 64GB

SDCZ43-128G-A46 - 128GB

to boot from any of them?

The bottom line is, I’m still clueless if I am safe to buy this model (in any size) and rest assured I can boot from them, because of some tweaks on SanDisk’s part? See reference: http://forums.sandisk.com/t5/All-SanDisk-USB-Flash-Drives/USB-Flash-Drive-showing-up-as-LOCAL-DISK/td-p/309565

Any assurance I can get? Thanks.