[@Naril] is right about "weight" being produced from the ships thrust (which for 1G I calculated to be about 4.9GigaNewtons) although it's a bit different from the force of weight on a planet since it's down to inertia rather than us actually acceleration down towards the planet. The only place I've seen this played about with in fiction was Stephen Baxters "Proxima" but that was also only at the start.

This does lead to an interesting question of what would happen to ships during the transition into a jump? I mean, assuming we've made the jump to Vega from Earth and not somewhere else, that's 25 light years in 4 and a half hours? 14.6 Tetrameters per second anyone? That's a crushing force of 7.31 ZettaNewtons being applied to our poor pilots going in and out of hyperspace (assuming the acceleration into it takes a second, but still.) which is something like 1.8 million nukes of force. 

I think worrying about gravity is the least of our worries, go with whatever floats your boat [@vietmyke] Newtonian physics doesn't account or allow for FTL travel anyway.

Which bring me to what I showed up for, I'll try to get a post up tonight. Funnily enough, I have a mechanics paper to finish off first.