@ Autorover Attaching a Side Bag to a two wheeler is a tricky thing. My cousin owns a CG 125 and we have tried our best to attach a Bag without any side effects, but didnt succeed. Failing to do that he bought a Carrier.
If you are conscious about your ride there are following problems,
Bag attached to silencer side or Chain Cover side will keep on touching Silencer or Chain Cover, result. Paint/Chrome vanishes or dulls.
Normally Bags are attached to the lower part of Seat with belts of Bag and it also touches The Side cover (TAAPA) same effect as mentioned above.
It may be so that we are not good engineers and you might solve this problem, in that case please do let us know so that we may also attach that bag