Happy to add to this that I recently found a packet of wb-06 in my garage fridge, I completely forgot I had. It was a month out of date, but has been in the fridge for at least 10 months, so I thought I'd give it a go in a small batch simple hefe recipe. I hadn't had any success with my early wb-06 recipes, and once I discovered 3068, I never considered going back. However, one thing I'd never tried was wb-06 at 17C, which is where I ended up with the 3068 liquid yeast.
So I did this (based on the "Harold-is-Weizen") hefe recipe from Brewing Classic Styles):
8 litre batch, 1054/1016 OG/FG, 5.5% abv after bottling
1.5kg CBW Bavarian Wheat LME
12gm Hallertau Mitt (4.8%) @ 30m - 14.5 IBU
WB-06, fermented at 17C.
Doesn't get a lot simpler than that, right? On first tasting at bottling time I wasn't quite sure this had worked....but I knew I was a bit anti wb-06. But I opened one last week, after a month in the bottle, and it's very, very close to my previous 3068 @ 17C brews. I was really surprised...and very bloody happy about it. Would have no hesitation brewing that again. I took a bottle to a recent "hoppy hour" tasting I have with a few fellow home brewers at work, and it went over a treat.