Spanish Work Visa Dilema - Please Help! :)

Hi

I’m a Canadian living in Britain with Dual citizenship (British / Canadian), and have solely my Canadian passport.

I’ve recently been offered by a British company to work in Spain at a business seminar for 2 weeks. My dilemma is whether to bother applying for a work visa for Spain; it can (apparently) take a few months (which I don’t have) and be a very drawn out process, simply for 2 weeks of work. The alternative is to go out there as a ‘tourist’ and hope all ‘goes well’.

I do have the right to obtain a British (EU) passport (also a drawn out process) but am worried, as have heard rumors that this may work against me when renewing my Canadian passport in the future.

Any help, experiences or thoughts greatly appreciated!

Many thanks

Jake