[Closed] spinner/slider combo UI: handy or too much?

I’ve been working on a rollout for distribution, and I’m looking for opinions on one of the UI elements. Now, when I’m caught up in making something I get annoyed with having to fuss with a spinner, but I get equally annoyed with the imprecision of a slider. So in this rollout I made each of the parameters adjustable by both a spinner and a slider. I initially thought it was kind of cool, but a colleague remarked that it hit him as a bit visually inelegant and redundant (that’s actually a pretty good description of me). Now I’m not so sure how cool it in fact is.

Here’s a little dummy rollout I wrote as a demo

rollout spinslide_combo "Spinner/Slider Combo" width:200 height:210
(
button btn_makeSphere "Make Sphere" pos:[32,8] width:136 height:24
groupBox grp1 "Radius" pos:[16,40] width:168 height:76
slider sld_radius "" pos:[24,76] width:152 height:25 range:[10,100,50]
spinner spn_radius "" pos:[80,56] width:88 height:16 range:[10,100,50]
groupBox grp2 "X-Position" pos:[16,124] width:168 height:76
spinner spn_xpos "" pos:[80,140] width:88 height:16 range:[-200,200,0]
slider sld_xpos "" pos:[24,160] width:152 height:25 range:[-200,200,0]
 
local c
 
on btn_makeSphere pressed do
(
c = sphere radius:50 
)
 
on sld_radius changed value do
(
c.radius = sld_radius.value
spn_radius.value = sld_radius.value
)
 
on spn_radius changed value do
(
c.radius = spn_radius.value
sld_radius.value = spn_radius.value
)
 
on sld_xpos changed value do
(
c.pos.x = sld_xpos.value
spn_xpos.value = sld_xpos.value
)
 
on spn_xpos changed value do
(
c.pos.x = spn_xpos.value
sld_xpos.value = spn_xpos.value
)
)
createDialog spinslide_combo 200 210

So, what think?
keep the sliders or get rid of them? Many thanks for you input.