The South African-born prop has been tantalisingly close to the action so far as Wales' 23rd man - going through match preparations in case of last-minute injuries.
The prop was then sin-binned for illegal use of the boot and, almost immediately, centre Gomer-Davies went through a hole on the Treviso 10-metre line on the left.
Prop forward Scott Wilson, flankers Jack Allcock and Hugo Peterson and fly-half Jonathan Burn are the players called-up for a three-day development camp at Abingdon School between 16-19 February.