Don't know anything about Pitts, but I have flown a PA32 with an approach speed of 90kias, so 87 doesn't strike me as making this a 'hot ship', although others have mentioned factors, e.g. sink rate, that would be unusual for a spamcan driver.
If you are a pilot who has experience of 'standard' spamcan approach speeds (172 at 63 knots, a 152 at around 60 knots and a PA-28 at 65 knots) 87 knots is pretty quick.