I like the guide, the only complaint I have is regarding the Disruptive and Spellbreaker feat options.
Walter mentions that you can get them as feats - what he forgets to mention is that you can't get Disruptive until 12th level, and can't get Spellbreaker until 20th.
If you want to be a good signal-blocker anti-mage then it's totally worth the arcana. Specifically Spellbreaker is a wonderful feat in its own right. I suppose you could hold off getting Disruptive until 13th and then get Spellbreaker at 14th, which isn't terribly behind that of a fighter, but if you really want the hard denial playstyle, I suggest getting them a tad early.
Of course, I just like being the only character to cast spells in a gritty melee.