You're correct, fungus, except it is rated at 10A, it better be able to handle 10A. What is "serious"? If I need to measure current in the range of 1 to 10A, how is my need any less serious than someone measuring 20A, or 100A?
I'm just saying that the "10A" is a fairly randomly chose number. What if you need to measure 20A? or 100A?
Fluke "light indistrial" Multimeters can handle 10A continuous and 20A for 30 seconds, right?
A cheapo meter can handle 5A continuous (probably) and 10A for 30 seconds, right?.
I propose a solution: Put a sticker over the "10A" of your cheap meter and write "5A" on it. Now you have a perfectly usable 5A multimeter and it only cost you $15.
Need to measure more than 5A for long periods of time? Get your 1000A current clamp out.