I'm a big fan of the Radio 4 series, and have just seen the first episode of the TV programme.
It seems a bit unrefined to me, shambolic in places. Part of the humour on the radio show derives from the internal logic the "geniuses" has created for their idea, and also by playing it deadpan, as Dave Gorman has done in previous TV shows. The TV show ideas didn't seem as strong or developed, and there seemed to be more of a mucking about feel, emphasised by Catherine, and to some degree David.
I want this to be good, I hope it settles down.
Brendan