In reply to david wands:
In the 1960s, a guy called Clem Mac Cartney spent years doing lots of (even then) average grade stuff in Ireland, i.e. sub VS. (VS was then a respected grade, especially in Ireland.) Then he did a VS, then another... a bit later Overlapping Wall (E1) on the Wasted. For his 14th route of VS and above, he did Spillikin Ridge (call it E2 with a bit of aid, back then). In the context of the times, a big leap. Less that a year later, he failed on Black & Tans at the Roaches. What is it, V Diff, Hard Severe?? No disrespect to Clem, he'd almost given up climbing, was pouring energy into making this world a better place. A good man.
Moral of the story? You can skip grades, yes, but, chances are, you'll very easily fall back down the ladder. Clem reckoned that his 'grade burst' came after a lot of consolidation at 'average grades'. [Imho, he only fell down the grade ladder 'cos of a change of lifestyle.] Same with Mark Stevenson, 50 E2s, Fair Head off-widths to scary grit slabs, then up to E4.
You may climb, E4, E5, E6... But, if you end up on a scary sea-cliff and have to do a nasty E2 pitch, with seepage and the crucial peg missing, you may be glad you consolidated.
Just a few thoughts...
Mick