It is impressive. Its hard to tell if its moving or not when you go at speed 9 while using it.
For a ship so massive (its bigger then that galactic perspective after pressing 'M' on the keyboard, lol), it loaded very fast.
Its not without its bugs though.
For one thing, the torpedoes are just yellow squares with no sound. And another problem is it tends to fly backwards.
I couldn't detect it well enough with my sensors on full (I was using a XI Kelvin at this time) as even with my sensors on full, and being 180+ kms away from it, it still showed up as 'unknown' on the sensors so I was unable to use Shift+K to knock out its engines so that I could fly into it. I'll try with a TNG or NEM era type ship next time as it is most likely just the sensor range that is low on TOS/XI type ships.
Don't try going to warp in V'Ger though, lol. Because of its sheer size, you'll be waiting literatly ages just for the pre-warp cutscene to end.