I wish I was a 4w3. I thought they were actually charming on occasion. I don't find 3s unattractive...quite the contrary. I'm pretty sure I like to date them. Sure they can have deception issues with their image, but everyone does if you consider that they usually believe their own persona as being who they are.
I don't agree with all of Naranjo's ideas (like his correlations with Jungian types; it's like he never read Jung), but I do think the idea that each type's fix is a blend of its wings makes sense. Unlike cognitive preferences, I think fixations are more of a spectrum, running along the outer circle of the enneagram. I think some 4s may not have a heavy wing, but will likely identify as 4w5 due to ideas about 3s. Some ideas about instincts have gotten mixed up with wings also. The 4w5 sounds more like sp 4s & the 4w3 like sp last (so/sx & sx/so).
I see 3ish traits in myself, as far as vanity & validating myself through achievements at times; but when it comes to personal hurdles & criticisms from others regarding my personality & its "issues", then 5 is the more obvious strong wing for me. I have some of the outward flamboyance of style of the 3, aesthetically that is, but generally am not a showman when it coms to behavior. I don't think 3 wingers compromise their integrity any more than 4w5s so much as create an ideal image more influenced with external markers of "value". 4w5s are not as authentic emotionally as we'd like to be; there's the 5ish tendency to dismiss one's own emotions as bothersome & making demands on one's energy. I envy the way 4w3s can be more unabashedly passionate & allow it to drive them. For me, I determine to finally act, then just roll over & go back to sleep.