[Tagging] Semi-colon separated route values

[yvecai]

There is a lot of relations out there with semi-colon separated route 
values, such as route='hiking;bicycle;horse' and every flavor one can 
think off. I guess that as there is so many, this is probably not  
wrong, it's just a fact.

The obvious alternative is to create quasi-duplicated relations with a 
single route=* value. It seems simpler, easier to dealt with for data 
consumer and also to maintain (what if I'm a cyclist and don't know 
about horse-riding specificity ?).

I'm starting a little poll here and on 
https://wiki.openstreetmap.org/wiki/Talk:Relation:route#Semi-colon_separated_route_values.

In your opinion, what are pro and cons of each method? Is there a 
specific meaning conveyed by semi-colon separated values?

Regards,

Yves