Well, I just bit the bullet. It should be here next week. I will try and post some images. Seems like tarptent has something good going on based on your reviews here. I did notice that the fabric was 30D compared to other tent companies being at 15D or 20D. At least being in the weight range...
As mentioned before, you don't need anything fancy to get started. Get some materials, and start sewing. Needle choice is important too. I found this out recently after breaking a couple while trying to sew through multiple light layers. Also taking your time and making a well thought and drawn...
I have been using the QRW2's for a while too. I bought an older set of detachable Weaver rings for a good price, and was considering swapping them out. I will have to get them on a scale and let you know the difference in weight.