I used 1M long speaker cables for years. In my experience, and in my system, I could indeed hear differences in 1M long speaker cables. I actually have a variety of 1M speaker cables that I have compared and the sonic comparisons between given types of cables are similar to what I hear when comparing the same types of cables in my current set-up, where speaker cables are 2 to 2.5M long.
One way to reduce the effects of resistance, capacitance, and inductance in a cable is to reduce the length of the cable. Therefore, the sonic effect of 1M long speaker cables should theoretically be less than for longer speaker cables, although the difference may not be easily discernable.