I've been riding fixie before and I use a saddle bag, the one that you put below the saddle/seat. Now I am buying a road bike and I am planning to use a cellphone holder with bag. It is placed on the top tube frame near the stem. I want this cause I am having trouble keeping my phone. I don't have pockets when riding bike. Usually what I put inside bags are 2 extra interiors, repair kit, levers, and some screw drivers. So instead of having two separate holders (a cellphone holder and a saddle bag), the cellphone bag is what I am going to use. By the way I already sold my saddle bag with my old fixie. What do you think of this?