I am forced to dual boot because my colleagues use Skype. Luckily, my laptop has a mSata slot , so a 128 Gb card dedicated to Linux. Never been an issue with dual booting my Thinkpad.
Yep, my only problem with Skype on Linux is that is an older version. Mumble taught me to use Push-to-talk, but it is only available on a newer version of Skype.