Electrically, there is no difference, zero performance difference. The advantage I can see with the tube block in your photo, is that you insert your wires, and turn a screw to clamp them in place -- very convenient, and easy. You may want to solder the wire ends, if they are braided, though. The screws will tend to mash them flat, and possibly push some fine, copper wires, out to the sides. Just a recommendation to get better, more secure connections.
If you do not have a fairing, you can always put a container of extra fuses in your bike's toolkit, under the seat, or behind the side cover. Tube fuses are inexpensive, small, and well protected in their cases. There are only two different ratings in the fuses on my bike, if I remember correctly, so you only need two, maybe three, types: 10A, 15A, and 30A main? Cheers!
1979 CB750K (sold, 2012, but not forgotten)
1983 Kawasaki 440 LTD Belt Drive (sold, 2011)
1993 Kawasaki Voyager XII