It is an incredible time saver, most of the time. There are two issues for which I have not found solutions.
Sometimes the device, when using text strings, overwrites the clipboard. Not all of the time does this occur but frequently enough that it causes extra work. It is intermittent and not specifically reproducible.
When using text strings, sometimes the return is zippy and sometimes it is faster to type the string manually. The letters appear one by one in slow motion.