None at all. In fact, Begali's HST series are both the single lever choice of many Radiosport HST paddle users, but explicitly converts to a sideswiper with the flick of a switch 

73 Chris NW6V 



On Fri, Jul 14, 2023, 07:42 Radio KH6O <radio.kh6o@gmail.com> wrote:
Is there any reason, other than asthetic, for not using a single-paddle keyer as a sideswiper?

http://vibroplex.com/contents/en-us/d10_VIBROKEYER_single_lever_paddles.html

73,
Jeff KH6O
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