Just thought I would update this thread with my experience so far. The pump was very easy to install. I just screwed in two john guest fittings to connect it inline between my source water saddle valve and the ro/di, plugged it in and that was that. It is pretty noisy though. I would not want to have this anywhere near my living room. I have it under a bathroom sink and it is still a little loud. I think it would be great for those people who have their ro/di's in the garage or laundry room.
My water pressure is very low at my house. Before I installed the pump, I was only getting about 40 gpd out of my 110 gpd rated ro/di. After pump install I am upto around 95 gpd. There is also far less waste water than before. This is not something I will use all the time, but I will use it when I need to fill my storage trash cans up for a water change.