Saw these yesterday and I think your concerns about how the tracks would translate to the stage were valid, MIKL. They didn't seem to have as much energy on the record, but were still played super close in terms of sound and performance. I almost feel like they have to work to create a more energetic live version, maybe with straight up traditional drums and a more stripped back "band" instrumentation.
That said, there will obviously be folks who are disappointed that it doesn't sound enough like the record... I guess it's a balance.
Those are probably my two favourite tracks from the album though, and I felt they were a little lack-luster. It was a Late Night performance though, which doesn't necessarily provide the same kind of back drop as a proper live performance.
Also, wanted to mention that I have been playing The Slow Rush non-stop since it came out. I wake up singing melodies from various songs and keep coming back to it. It's really such a great album.
