Hi Satbeerus,
I think it won't be an issue if the sponsor is a Canadian citizen (not sure about Canadian PR). However after looking at various posts on the forum regarding a sponsor travelling to the spouse country. Won't create any issues if the trips are 1 Or 2 months. He/she may travel after After sponsor is approved. Think about from other perspective - lets say the "sponsored person" is from another country whose processing time are more than 15 months (for e.g. pakistan's process is 36 months), so does that mean that the sponsor can't visit her for more than 1 months? Or they have to travel every year for one month to see their spouse?
Regarding the questions about the purpose of travel, it is a generic question that CBSA officer asks if u r out of country for more than 1 or 2 months. For personal experience, I have travelled to india when I wasn't married after completing my college for 3 months for vacation. When I returned they asked me the purpose of travel as I was gone for 3 months. I simply said that I completed my college and before finding a job I wanted some time off as no company would give me a time off for more than a month.
Now, I am travelling to india to see my wife (end of november) and planning to bring her along with me (end of Jan 2015) when I return as we are early May applicant and looking at the trends in the forum, she will be getting her visa soon. If they do ask questions then it won't be a problem as I wanted to see my wife, and plus I will be graduating in 2 weeks from university (so wanted a time off with my wife before we get busy with our jobs).
My sincere apologises if you feel that I don't agree with your views. However, I COMPLETELY AGREE with the point that the sponsor must be in Canada or atleast returning back with the sponsored person to Canada together.
Cheers,
DPatel