I believe we will see a comparable amount of Parrot questions as we see ones relating to Apache, SQL and similar topics, if that much. They'll be there, but not a whole lot of them. Most people will probably be as concerned with Parrot as they are with Perl5 XS coding, hacking around in the guts using the B::* modules, or on the other side of the fence, writing Java VM assembly.
Makeshifts last the longest.