This is true. I can't see giving SPDs the wild abandon that one can give clips and straps. Helps with getting those big gears up the hill and over the top, too!
A dear, mad old mate of mine rides with one toeclip and one clipless. The reason he gives us that toeclips hurt his feet, but he finds it difficult to disconnect from clipless. Don't ask me to explain further.
And then he starts to topple over onto his clipless side...!
(I successfully unclipped from my LH SPD pedal once, would have been fine if I hadn't been falling to my right at the time! )