I'm no Paramount expert of any kind, but I seem to recall that bar end shifters were an option for them. To me this is purely personal preference, many like the convenience of having shifters close at hand, others (like me) prefer DT shifters. If you like the traditional appearance of DT levers, and those you have pictured are nice looking, then do it. You can certainly sell the BE parts fairly quick, IMHO.

Up to your taste, sorry for no big epiphany answer.

Bill