You really do not get it?
Escrow ? Nobody will be for it using paypal- the bigest disadvantage is the possibility to get the money back even few months later.
Besides, How do you guys want to make BTC more common payment option and not recommend him(her?) to buy some bitcoins instead of using paypal.
Just create a wallet, find a guy in "exchange currency" that will accept PP and give some BTC, thats all.
It is really not a big deal with starting using bitcoin.