The Street Beat is a great knife though in reverse or icepick grip it's really shaped to go edge out vs: edge in like the clinch pick or P'kal. Cato and Pony13 thanks for mentioning those makers, their stuff looks great and prices seem reasonable.
I would recommend also looking into Laci Szabo's designs, especially the Felony Stop, many are designed to support multiple grips.
Interesting that Spyderco is doing more p'kal style blades, I would've thought this would be a pretty small niche market.