A Way to Show Decimal Tempos?

Dorico seems to let me set the playback tempo to anything I want, but the tempo in the score is rounded up or down to the nearest whole number.
Is there a way to override this and set the tempo to, for example, 149.3 bpm?

Not at the moment, but this is something we plan to do in future (as you no doubt know, it’s sometimes required for pieces with electronic elements, or when playing to a click for sync).