an hour long ride isn’t a long ride. ;-P
but sitting on the bike in the showroom’s fine as long and will give you an idea of how it’ll feel on the road. if it’s uncomfortable from the start, it’s just uncomfortable from the start. if you can get the sales person to hold the bike upright for you to sit on, even better.
And one of the first things I do when I get a new bike (sprotsbile rider here) is to change the rear sets to either sato or vortex rear sets with pedals and add on frame sliders. I’ve never liked the stock rear sets of any of the bikes I’ve owned or sat on.