The advantage to Inland is that your husband can stay with you in Canada and can apply for a Work Permit so he can work during the process. Problem is if he doesnt get a TRV to travel to India and isnt let back into Canada, his application can be considered abandoned.
On the flip side, you can apply Outland and he can be free to travel as he pleases, but if he stays with you he can only stay as a visitor, and cant work in Canada until the whole application is complete.
Hope this helps your decision!