I’ve never seen finger grooves, RH or LH, on a Commando handle, which is not to say it isn’t available.

Usually, a straight or stick handle shape is required for RH/ LH finger grooves.

Captain Chris can give the final word on this question.

For an educational resource on this inquiry or any Randall inquiry, look no further than the sticky thread, "Knives of the week: #1-#28 in this sub-forum.

Click on "Model 2", and scroll through 58 pages of comments and photographs. But be mindful that what may have been a feature prior the '90's or before, may no longer be available to the current buyer.