Can my two male syrian hamsters live in the same room in different cages?

I have 2 male hamsters in different cages, their cages are right opposite each other in the same room. One of hamsters seems to be a little bit nervous however this could just be him getting used to his new home although i have had him since 15th May 2008. I got them both at the same time from the same pet shop where they were housed together. Should I keep them in separate rooms or will they be okay?

Is a Campbells Dwarf Hamster different from a russian dwarf or are all dwarf hamsters the same?

I ask because I read that campbells dwarf hamsters are prone to diabetes so should not be given fruit. Wondering if the same holds true for russian dwarf.

What 2 hamsters can i buy that will be able to live together in the same cage?

I am going to buy some hamsters on the weekend. I’m going to buy 2. I want to know what kinds of hamsters i can buy that would be able to live together in the same cage.