I used it to consolidate my lava power room from geothermals/magmatics to just geothermals and the converter blocks. While it works well to supply a separate MJ grid, I wish there was still a one-block solution available for EU -> MJ, as then I wouldn't even need an MJ grid. I can't have 3 converter blocks attached to every pulverizer.
Actually, what I'd really like is to see more mod machines that are able to accept multiple power grids, like how MFFS can use MJ, EU, or UE inputs. My dream of the future has RP2 managing all of my electrical needs.
Edit: And while on that subject, an alternative to a blutricity paradise could be Thermal Expansion's machines passing their power along to adjacent blocks, the way blulectric machines do. That would be VERY COOL.