I already have a (great) rice cooker and a (not so great) slow cooker. Does the instant pot _actually_ replace those two appliances? Does it sous vide?
Does not do sous vide, but it certainly can replace your rice cooker and slow cooker. Only trouble is having only one appliance prevents you from cooking parallel (making curry _and_ the rice to serve it over, for instance, would be a problem).
Not purpose built for sous vide but the keep warm setting hovers ~70C which is nice for well cooked but still moist chicken. I believe the smart model has adjustable keep warm settings and is more fit to purpose for sous vide. Instant pot also sell an affordable immersion circulator.