Considering if you're going to use it ONLY on full HD, then acceptable. But since when modding .svg is only for full HD devices? You must also consider the lowest resolution devices and that is 320x240, in which 1 decimal will be significantly impacted*. Just my opinion.
If you don't see much size reduction, it's "other things" you should be looking at such as redundant paths or gradient optimization.
BTW, I find the ideal of using vector for small icons silly. Vector is used mainly because they do not want to waste space (storing different resolution sets) and time (converting to different bitmaps). You can easily change code to use one set of .spr (sprite) for speedcam icons. Put it under nodpi and have proggy do the scaling automatically.
* when dealing with significant decimal digits, do not assumed that your measurement will always be in resolution (ie: dpi) It can be any decimal number that can get transformed. So unless transformation is flatten (or not used), it's not wise to use low decimal digits.
Update: Here is some of my tips on optimization (keep checking back for any new tips added later)
Spoiler: .
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