It would really come in handy.

The short answer is probably no, unless somebody else writes that program logic. In the mean time, you can use Shrubbery's Tux Guitar build, which has GPX support:

http://customsforge.com/topic/2235-guitar-pro-5/?do=findComment&comment=11971

 

You can then simply open the GPX file in Tux Guitar, save it as GP5 and use it in EOF.

I found this website that i used to convert a file from .gpx to gp5.

http://webtabplayer.com/gpx-to-gp5-online-tab-converter