I used to use Cakewalk in my laptop during -set arranged- performance many years ago. I did not use it to playback sequencer, but rather to bulk MIDI bank / program change to 6-7 MIDI gears at once. I save all bank / program change within a song in a project, and connect my laptop to live MIDI gears. Big time saver, and I didn't have to worry about forgetting what sound should be loaded on synth A for particular song. Loading was not a problem since it was MIDI only data, and most of the time I only need to load 1 project before the show. Data of different songs were arranged / aligned in every 5 sequential measures, and add marker. So all I need to do was to scroll to (eg) measure 6 and hit play a measure to switch to second song, and so on.