Why? It's got nothing to do with BRSF. These people are coming from ice hence NISA being mentioned. If it has anythign to do with Rollersports then at the competition level FIRS ought to be involved but the last I heard picskates were not permitted in artistic competition because the skate nazis in the artistic division are all old school quaddies who don't think they are pure and hate anything inline with a passion. Probably a bit like recumbents being outlawed in most cycle competitons.
It's actually nice to see that ice is open minded enough to see that there are other technologies out there that will let their skaters train without the need to rent ice time.
Another benefit for ice skaters is they will be heavier so if they can do stuff in these then they should be able to get more height or rotational power for their toe loops, axles, salchows and even their spins.
Back on topic of Dragons Den though and yep, Theo is probably going to struggle with this one. Suspect the due diligence they do after the programme to see if they have been misled before the money changes hands will turn up the pic skates though and the terms of whatever happens will change quite significantly from what appeared on the telly