Come along to a trade day Tony. Will show you how to use them. I think you might be better with a MAX handle. They score forwards like what you use all the time. The 2G is backwards scoring and takes a little longer to get the hang of. It's the original scoring type so old school.
Thursday 27th at the Tile Source Hedge End. Near Southampton. Loads of Sigma stuff on display and to try out. Also a full Hog roast and real ale supplied by local brewers. Forget the tools and just come for the food and drink!.