Hi Dominik,
What's the deal brother? Is your life to boring that you would even concider something like this? :<))
Seriously now:
If you go this route, you can't expect to get support for any problems you may encounter. It woulod be just to easy for both NI and HP to just point the finger at the other.
Even though I love LV and push it whenever I can, I would suggest you settle on one or the other.
Ben