Saweeet!! I have the conjuration perk AND the 1 & 2 handed perks.
I did something right for a change.

Just remember, the physical weapons you can enhance will always be able to have a higher damage output than your summoned weapons. Conjuration level does not affect their power, only how much magicka is needed to cast them.
It all depends on what you need, if you have fun summoning your weapons and can get by the tougher game segments without an enhanced weapon then it should be the right path to take. Just remember an actual Daedric weapon can be enhanced via smithing to hit harder than your summoned weapons ever will.
And much, much heavier. I'm quite happy with almost as good and light as a feather. BUT - my weapons skills won't rise if I'm ONLY using bound weapons... is that correct?
No, your weapon skills will increase when attacking with bound weapons. Weapon skill increases are now apparently based on damage dealt and my one-handed skill has increased while sporking enemies with a summoned sword. So even though you're using a bound weapon, the game still treats it as a regular weapon while its in your hands, susceptible to all the benefits regular weapons have available. (Excluding Smithing and Enchanting)