Pasting Cell Values Matching Destination Formatting?

I have browsed for two days looking for material on effecting this. The technique quoted most is watch for undolist for paste & auto fill then undo the change and paste the value again with specific formatting needs. This technique can be implemented in a worksheet_change event handler. The problem that I am facing is that the user can copy and past while my VBA is running. Once it is caught inside my own application class object event handler all that undo stack is already cleared. Therefore I have nothing that tells me if the user has entered the value via a paste action. By the time the value is pasted, all that formatting would have been entered. For example, a value that is interpreted by another workbook as DATE will have my destination formatting changed to DATE as well even though it is designed to be TEXT at design time.

So far I have not been able to think of a scheme to deal with this.

My basic intention is to always ensure the destination cell formatting remains as TEXT. If something is already interpreted as DATE after the paste even if I can convert to TEXT the string will appear totally differently. I have to find a way to paste the whole thing as TEXT in order to keep the string the same. The problem is that there is no intrinsic PASTE event in VBA. Without a method to undo that paste I cannot catch this at all.