Most Roland's without an easy transpose button access can be programmed with a Performance already transposed. As long as you know that somewhere in the song you are going to go up a half step (or whatever), you can program a second Performance (simply write the same Performance a second time with the Transpose on... very little work) transposed, and use the easy front panel access to up the Performance, or even put it on the FC-7 footswitch choices (for the BK-7m), which allows a 'Performance Up/Down' option.

While not as perfect as a two button transpose on the front panel, it does have one advantage... Quite often, at a transpose boundary, you might want a 'lift' in the style by changing the lead sounds, track volume, unmuting a few style Parts you backed down for the first section of the song, even push the tempo 1-2bpm for an energy 'lift' along with the mere transpose. Having two performances (or more, as necessary) allows you to do MUCH more than simply change key.