You must consider the impact ability of impetuous foots exactly in the same way that for non impetuous. So this ability doesn't apply against impact mounted troops.
The slight diffe ...
I really appreciate a kind reply from the author.
Impetuous rules (p.17) says: the impact of impetuous foot is cancelled when charging non-impetuous medium and heavy swordmen.
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Anche io sarei interessato e forse potrei "trascinare" un altro paio di amici di Roma.
Anche noi preferiremmo un torneo a tema e saremmo più per vederci a Roma da qualche parte, piut ...