You are driving along the road when the dotted white line that has been your companion — separating your car from oncoming traffic — suddenly disappears.
One theory is that you will slow down, making the road safer.
What could possibly go wrong?
What if it's a honeytrap?
Unfortunately they can't compensate for all atmospheric interference that way.
Just because it works for you doesn't mean it will work well for someone else with another brand of surge protector. The safety level on the US power strips aren't as good either compared to the Euro variants.
You don't lug around a 1:1 transformer if you are traveling around the world. You want to travel relatively light.
Power strips with surge protectors worth their price aren't $10, they are closer to $100 in Europe.
For $10 you may get the cheapest possible ordinary unprotected power strip.
Most power supplies are auto-range or wide range 100-250V or so, so only a surge protector for the upper voltage is needed.
A surge protector for 230-240 volts is what's needed.
So get a power strip with surge protection for Schuko (Common style in most of Europe) connectors, replace the plug with a male connector same as power supplies as stationary computers have and then get a country specific power cable in the country visited.
The reason to use the Shuko connector is that most devices are available in European format alternative, fewer in the UK format and the Schuko plug is smaller than the UK plugs as well. Any talk about need to identify live and neutral is just bollocks on anything manufactured after 1980.
If all the power supplies connected are auto-ranging up to 240 volts there's no need to have a voltage specific surge protector, the power supplies can cope with it.
The person who's taking you to lunch has no intention of paying.