The Daily Mail's version seems to point the finger at Bare Girls but it is not certain whether the victim was motivated by Girls' TV entertainments.
I think it unfair to blame Grylls. That said, IMO it's only safe to emulate himif you go the whole hog - the hotel room, the production crew and cameraman, the helicopter, the sponsors, the catering truck.
Wot the Viking lass says - go anti-clockwise to avoid that brutal first ascent up to Nab Scar and on to Heron Pike. That said, it might also depend on wind direction.
A good 'quickie' from Ambleside is to walk up the lane to Stockghyll Force then up the footpath to Wansfell Pike - an easy walk on a good path with good views from the top.
"Never more than 3 miles from a scone" is a fine maxim
Another thing to consider is which fells are readily accessible from each town.IMO, Keswick has the edge over Ambleside in that regard.
A bus ride from Ambleside into Langdale brings you to Langdale Pikes; High Raise and the central ridge to Ullscarth and beyond; Crinkle Crags; the noble Bow Fell; Rosset Pass and on to Esk Hause.
A bus ride from Keswick into Borrrowdale brings you to Seatoller with access to the Glaramara ridge; the Gables; Scafell Pike and Sca Fell; the Derwent Fells and the Buttermere Fells. Also, Skiddaw is a walk away from Keswick and Blencathra a bus ride.