Touring locks

Do you take a lock when you're (solo) touring?

Yep, there are definitely times where I'm going into a larger shop/supermarket where I can't keep my bike within sight. My bike is typically pretty loaded so not the natural choice for joy riding but I would hate to have my holiday spoilt by bike theft

If you do, what kind

I bought this with specific intention of using for touring. I've got two much heavier Kryptonite locks but they're overkill for touring (I can remember getting some strange looks when using one in Vietnam years ago)

https://www.litelok.com/collections/litelok-products-all/products/litelok-go-flexi-o

I realise there's products like Hiplok Z-Lock which deter opportunists but they offer v limited protection. I arrived in Scotland by train earlier in the year and there was a couple of lads who likewise had brought their bikes for touring purposes. One of them had locked his bike in the luggage area but managed to bend/break key in the process of trying to unlock. I was able to cut them open with a Gerber multitool (not quite like butter but pretty quickly)

and what's your rationale? If not, what's your rationale?

It's not simply the risk of theft, it's also minimising the inevitable paranoia when leading bike unaccompanied (I typically ride around London with two Krytonite locks including a Fahgettaboudit so I may be more risk averse than some of you)