John, it's not 'spigon' - it's 'SpeakON'. The salesman maybe didn't pronounce the name of the connector correctly, but in fact, the salesman was right about those connectors being the best for speaker cables.

If you have your mains up on speaker stands properly, with a correctly sized tripod, with the legs at their most stable, the dude will trip, the speaker will stay in place and the only problem you'll have will possibly be a lawsuit from the dude because you routed your speaker cable where it shouldn't have been or didn't take care to make sure it wasn't a trip hazard. All of those conditions might seem like a hassle, but safety should always be the primary concern when it comes to mounting speakers and routing cables. Always. Gaffer tape is your friend here, as well as a couple heavy industrial rubber backed throw-rugs to lay over where cables have to cross pathways.

The main benefit with speak-on connectors is that they break both sides of the signal to the speaker simultaneously - avoiding a 'pop' to the speaker; unlike 1/4 cables. Also, because of the way they are designed, they can't be mistaken for other cables - like the age-old issue of folks using undersized instrument cables to handle powered signals from amps to speakers and vice-versa.

In my part-time work as a live sound engineer, I'll take speakON connectors over 1/4 plugs/jacks every day of the week.

Shame on the salesman for not properly explaining the benefits.