I don't have any experience with the one you are looking at. Hopefully someone has some feedback.
Depending on how "fancy" you want a portable option to be there are other ways. I used a Coleman Cube cooler to make one. I cut a hole the size of my kegs in the top, fill the cooler with ice and roll it where ever it needs to go. I use a 2.5# CO tank and a picnic tap with it. Works great for parties. The main costs were the cooler and the CO2 tank.
Paul