It was actually brought up in an interview at one of the recent events that you COULD do this, jump into a ship with your SRV while the ship is flying by, so I'm sure we'll have lots of people trying to do it, I know I'll give a go
Our ships will be AI controlled and take off for a 'safe' orbit once our SRVs get a certain distance away, so we'll be able to call them back down to get back on them and that would be when this could happen...until we get multicrew ability. I am going to try and get some of my fellow SRM members from other games into Elite JUST for this reason, because I know they'll get the ship lined up perfectly and wait until the LAST second to close the doors, love those guys!