No, if you are proficient and have no adverse effect from the in-string peep, and the peep is remaining in position to continue wonderful performance, then there is no need to move to an adjustable peep. The QSE allows the end user (archer) the ability to quickly install. Adjust the peep when string stretch or creep effects the position of the peep, causing viewing difficulty. Need to bring the bow to a shop/technician to realign is not required, tying up the equipment or down time. The QSE is adjustable quickly and easily on the spot, at home or in the field. Requiring no technical skills to perform the tasks to install or adjust. Although having a QSE on hand, may be an asset, if/when the situation arises and the In-String Peep presents worries!