I really do like this device. and is unique in the fact that is can be used as a 'auto-locking' rappel device. Used properly is provides a great safe catch. Some things to keep in mind when you use the Smart/Alpine Smart:
- You will need a HMS style carabiner. That is to say, a pear shaped one. Not D or O shaped.
- Make sure you get the right size Alpine Smart. They make 2. One that accepts 7.5 - 9.5 and, 8.9 - 10.5. The device ONLY works within it's rope diameter ranges! There is no grey area of acceptable rope ranges like on some other devices. Too thick or too thin for the device, and you're going to have a bad time. I suggest the larger size for the gym (if they even allow locking devices.)