I would say it's the Stoppard play for people who don't like Stoppard. Having said that, I think that some of devices that seemed fresh and funny when it was written may seem a bit old hat by now. Still, I would say to go.
I just looked it up to find out if it's being done on a double bill with After Magritte, as it was when it was first done in New York Off-Broadway in 1972, or with something else, or alone. Looks like it is being done by itself. I think it usually runs around 50-60 minutes so if your partner hates it, at least the suffering should be fairly brief. On the other hand, I am one of those people who finds it odd to travel to see a show that is only an hour or so. If you feel that way, too, perhaps you should skip it.
When I saw it late in its run in 1973, Lenny Baker and Ted Danson were in the cast. Baker made a big impression, and Danson did not, but Baker had the much better role. I loved Lenny Baker.