I really like this STP. It is very realistic, I would have no problem pulling this out at a public restroom. The only down side I have found is that it is a little awkward to place when you are not using the restroom. Because the bowl is so big it can make for a little discomfort and shifting in placement when walking around. Over all a good STP!
Using it to pee is very easy, but packing can be hard due to some of it's rigidity and size of bowl. Also a bit awkward to put it in the right position between packing and peeing. But still a good starter!