I love using this as a packer, but with all STPs, the learning curve is steep. I chose 4 stars because in order for the funnel to work, the shaft has to be far from my body which is.. awkward considering it makes using a urinal less discrete in my opinion. I will try to size down in the funnel with hopes that minimizes the problem. The harness can be a little funky at times and the plastic digs after all day wear, but overall it makes me feel less dysphoric and I actually don't leave my house without it now!