I have the following tacit fork (intended to be used monadically):

F&.I G H&.I

i.e. the left and right verbs F and H of the fork get I applied with &. (under) before feeding the outputs to G.

Is there a way to simplify the fork definition, in the sense that &.I is only specified once?

(F G H)&.I is not equivalent since I^:_1 is applied after G, not before.

(F G&(I^:_1) H)@I is equivalent but clearly not simpler/conciser.