If you plan on solely using them for a bs, or a knight class, or other classes that can use boots, you could do that.
But shoes are a fairly universal item, and if you plan on eventually selling the eddga shoes and upgrading to say, Dark Lord Sleips, you would be better off with shoes, because more people will want to buy them for leveling purposes. That said, I still think that shoes are better to own simply based on the fact you can wear them on more classes.