As soon as I first picked one up I found it easy to put down. The 97 simply did not fit.
The model 83 is a different story. It fits me well. Now while the 454 does not need to be loaded to the limit, I personally would not want a 50oz FA model 83 to fire 45ACP so have never purchased an auxiliary cylinder. In fact, the purchase of a 42oz Ruger Flattop 45(Colt/ACP) convertible was not much more than one FA auxiliary cylinder.