Shoelaces outside the eruv

Hi,

If one is walking outside the eruv, and his shoe becomes untied, is he obligated to tie his shoes, lest he be considered "carrying" his shoelaces?

If the shoelaces are still keeping the shoe somewhat closed, one need not stop to tie them. There are those who permit him to continue walking even where the shoes are entirely open; since the laces could be used to tie the shoe, they are considered part of the garment.

[I have seen a similar question discussed regarding the belt of an open raincoat, but there it seems that the consensus is that one need not close the coat with the belt; a belt in beltloops is considered part of the garment. - MT]

(Rivivot Ephraim 1:223:15)

Have a great day,
Mordechai