Personally I wouldn't touch RVXCF with a ten foot pole....and the reason is simple, liquidity. RVXCF traded a piddly 3,000 shares today, and I know I'm not alone in owning many multiples of today's entire trading.
There are a lot of investors (mainly in the US of course, which is a HUGE number) who won't touch OTC stocks either because they themselves consider them too sketchy, or because their brokers won't allow them to because of individual risk profiles being too low.
Just saying "Resverlogix trades OVER THE COUNTER in the US under the symbol.....", that lumps RVXCF in with all the other loosely regulated and often times shady OTC stocks. Even better (by which I really mean worse) is when, instead of OTC, they use the word "pinks".
As for an IPO....not needed, they merely need to "graduate". I'd be fine with a reverse split if it was to meet the miniumum $2 requirement Nasdaq has and get us off the dreaded otcbb.