Leakage will be a non-issue, man. I rock my V-80s everyday with Kpop blasting and no one hears it. I use a cMoyBB and have the volume on my sourse (Infuse 4G) at about 80% and my cMoyBB turn just a notch or two below halfway. I turn it up louder if I'm on the subway, but if they are leaking at that volume, I'm still on a subway. Subway noise > V-80 leakage.
There were only a few times where the leakage was overwhelming and it was when I handed my cMoyBB and V-80s to some n00b friends of mine to try with their iPhones and they immediately turned the volume knob to MAX. With the headphones on their head it sounded like they were playing music through the phone's internal speaker at 75% volume. I doubt you would wear them on your head at that volume. Apple iBuds. Those stupid things leak!
Is it just me, or does it seem like anytime someone's headphones/IEMs are turned up too loud and leaking it's always hip-hop or rap? Are these the only music types that leak?
I know, and I've acknowledged that it probably wont be an issue at all for me. I was just telling that person that in the unlikely case that leakage is worse than I want - I may be able to sell if he still wants it.
It's a very unlikely situation.