I have frequently used my WA with a Bergantino NV610 which has a pretty similar vibe to the 810. It does not provide the same SPLs as an SVT, but it's worth noting that I haven't run into a situation where the WA with that cab isn't enough for what I needed. That can happen with my Berg 212 though.
There are a variety of reasons for the difference between the response of the SVT and the WA, and I will forgo even mentioning them for the sake of this thread and the people who read it

but I will say that anyone who truly loves the WA should run one into a cab of that style at least once. It's pretty awesome!