Bus stuffing during register reads?

[+rbairos]

I understand the benefit of overwriting addresses and values to the tia during writes but is there any value in stuffing the bus during a read?  

I'm working on a design and wondering if that's important.  

 

Eg overwriting returned joystick values etc.

 

Can't imagine it's been used in practise but just want to verify.

 

Thanks.