The biggest problem with a lot of the runner decks with "inevitability" is that a decently fast start can blow them out. Some of these decks run cards like Beth, Diesel, and Quality Time, but a lot of the time they never have quite the amount of draw they really need. This has been the problem with a lot of Shaper (and Sunny) lists for a long while. To be honest, none of the Anarch decks sound great to me when I think of Skorpios and any taxing sort of HB. Well, except maybe DLR, which has its own sort of inevitability, but you'll need a way to get it going potentially without spamming Account Siphon. This means non-MaxX DLR, and it also means that perhaps trying a Vamp deck would be a good idea.
I don't have any Vamp decks readily available, but they can be truly hilarious. If you're thinking of trying something combo-y, I suggest trying (not necessarily for Regionals, unless you start winning a bunch) a deck that features Vamp -> Apocalypse -> tons of Keyhole runs. Even without the Apocalypse, Vamp and the Eater-Keyhole combo tend to be fairly strong (except against ICE like Turing, Chiyashi). But given that I'm hearing some grumblings about HB asset spam, Apocalypse seems rather strong and hilarious splash, wouldn't you say?