Honestly ... if I need to transfer from bitcoin, then it's a product on a secondary market and not at all a currency. If you have bitcoin, and simply hold it at any point, it will always out perform the altcoins over time. Buying bitcoin (which, bought with dollars, you lose some value there), and then transferring it into an exchange (and pay fees to transfer, more lost value), and then the coin itself being useless unless it's only used to speculate for profits to be dumped back into BTC ... sounds entirely pointless and just a way to give the PIVX devs money for ... not really anything.

Anyway, if bittrex AND buying bitcoin separately is "easy" to you, then I'm assuming you live an incredibly difficult lifestyle.