Geo, the "SAPPER" tab is given to those soldiers who complete the US Army "Sapper Leader" course, and is worn much the same way as a "RANGER" or "SPECIAL FORCES" or "AIRBORNE" tab by US service personel. I know the few Canadian Engineers who have attended and completed the Sapper Leader course to date have all been awarded the Sapper tab, but I don't think any of them have been authorized to wear it with Cdn DEU or Cbts.
HOWEVER, that being said, I saw an email posted up in our breezeway that was a synopsis of some dress meeting within 2 CMBG, that made reference to the wear of US and other foreign "tabs" and the such, and it stated it was in the process of being sorted out at the CF Dress Committee (or whatever it is called) level. It stated that those tabs and badges would be authorized for wear on the left breast pocket of DEU (I cannot remember if it was above or below the medals), pending authorization from NDHQ. Also of note, it mentioned the wear of fleece as an outer garment, and wouldn't you know it - it IS an outer garment
Sorry, couldn't resist.
Anyway, the top of the email with the sender, recipient and subject line was ripped off before placement on the bulletin board, so I don't know how recent or accurate the email was. I'm only at work one more day before I take a couple days off and head to G'town on course, so if I remember, I'll take another look at the email for the exact wording and get some clarification from higher on where it came from and how recent the info posted is.
a_ron: I know it's not quite the answer you were hoping for, but I'm sure that you could always use your CoC to find the answer you need