Just tried one of their soured ales tonight - Lock, Stock In a Sour Barrel (5.3%). It's their stock ale aged for 6 months in Chardonnay wine barrels (from Tawse Winery), and it's pretty darn refreshing and delightful. Well-integrated funky sourness, with subtle buttery oak and vinous grape flavours. At $7/bomber, the price is reasonable by Ontario standards.
Not sure when I'll be heading up to Guelph next, but I'll definitely be making another stop at this place. Their year-round beers are pretty average, and their seasonals are hit/miss, but this brew has encouraged me to keep an eye out for more of their wine barrel-aged stuff. That pepper ale definitely sounds right up my alley.