I would never thought about it, but I heard that quiet a lot of bicycle tourists travel with sandals and even bike with them. Apparently Shimano even do SPD sandals, I was hoping someone can give me some can give me some feedbacks and maybe suggests a few brands and/or models (SPD or not). Thx

I only know about Shimano sandles with SPD. I haven't heard of other brands.
Some people are making long tours with them, I have no experience myself.
Other sandles might be confortable for cycling as well.
I have Timberland, my girlfriend Teva. Both have a good strong sole.
Of course you lose some efficiency (about 10%), but who cares on a long tour?

I have pedals with one side SPD and one side normal.
I take sandles for warm and dry weather and SPD shoes for cold or wet conditions or very difficult mountain stages.

Peter

I got the Lake I/O SDL and I would love to try out the Keen Commuter, one reason for liking them both is that they cover my toes. So therefore warmer for more of the year cycling. I managed to cycle through the winter with mine with socks and overshoes.

The Lake's lasted a year and nearly 6000 miles and a lot of walking. I do around cycle 25miles and walk 4-5 miles on average a day in them and wear them for around 8 hours a day. So I think they have done very well as a shoe and for what and how I used them. What I really like with the Lake's is that the cleat is reset so much that I haven't worn the cleats down yet, where my Shimano shoe I wore the cleats down in half a year. The minus part of the Lake's is that they don't breath well so even with them being sandals they make my feet sweat a lot.