So I got my Lurpivs at last. Unfortunately I got them at a time when I am not allowed to skate after a surgery so I was only able to roll around but I still got a feeling for them which I can share with you.
I come from riding Indy standard 144s but I got the Lurpiv 149s because I ride 8.5 decks. I set the Lurpivs up on an already retired Ishod full with some 25 year old Spitfires at around 53mm. On the right my regular set up with the Neen twin nose, Indies and Bones 100's at around 48mm.
I went to the parking lot and only rolled around and practiced manuals. At first, the Lurpiv set up felt really high. Placing the two set ups next to each other you can see that they are the same height. On the left hand with the Indies I have a 1/8" riser but the wheels are ca. 5mm smaller, whereas on the Lurpivs I have no riser but taller wheels so in the end I guess they are really the same height (which they should be according to official measurements).
So how are the Lurpivs compared to the Indies? I ride the Indies medium loose (i.e. nuts flush with Bones HC bearings). When I stepped on the Lurpivs they were very loose to the point they were not stable so I tightened them down a few threads to the point they are stable when riding straight.
As others have pointed out the turn on the Lurpivs is amazing. I always liked the surfy turn on the Indies but the Lurpivs turn a lot better. The radius is much smaller on the Lurpivs and they do not wheelbite. On the Indies I get a lot of wheelbite even with those sub 50mm wheels if I ride them without risers. On the Lurpivs I did not get wheelbite without risers and with substantially bigger wheels. They are very responsive.
The overall weight of the Lurpiv set up is a tad heavier than the Indy set up but that is most likely due to the board being soggier, the wheels being larger and the trucks being wider.
Hole to hole wheelbase on both boards is identical but as you can see the Lurpivs make the wheelbase visibly smaller (ca. 5mm) compared to the Indies.
These are my impressions so far. Obviously, this is incomplete as I haven't popped a trick nor grinded them. Still I got a good feeling for the Lurpivs and look forward to further examine them once I am allowed to do sports again.