I think it really depends on where you see yourself working afterwards, and where you plan to pursue your license.  Although there are many companies with international offices, you generally 'get in' locally and may then transfer internationally.  In that sense there isn't much of an 'international market' as such!  In my experience, although they may do international work, local offices look for local accreditation (for the most part, unless it's a transfer).

Personally, I had a lot of difficulty coming to the UK with American degrees as no one understood them.  It may have been different had I finished my exams at the point of moving (and could have said I'm a registered architect).  Instead I kept trying to explain I was the equivalent of a RIBA part II and had finished my IDP (no one knew what that was).  I mean, I got there in the end, but it was a bit of a hindrance initially.

I guess my advice is to really think about where you want to stick out the full course of your education and initial experience (through to license).  Trying to move between registration systems can be a mess and tends to have financial implications as well.

Best of luck!